5. During a summer spraying program the mosquito population was reduced by 15% every 3 weeks. If the mosquito population was originally 180,000. How many mosquitoes remained after 10 weeks?

Trigonometry (MindTap Course List)
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ISBN:9781337278461
Author:Ron Larson
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ChapterP: Prerequisites
SectionP.3: The Cartesian Plane And Graphs Of Equations
Problem 7ECP
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5. During a summer spraying program the mosquito population was reduced by 15%
every 3 weeks. If the mosquito population was originally 180,000.
How many mosquitoes remained after 10 weeks?
6. The number of bass in Lake Okeechobee has declined to one-third its previous
level every 7 years since 1960, when it was estimated to be 8000. How many
bass were in the lake in 1970?
7. The world's elephant population has been estimated to increase from 415,000 in
2010 to 497,000 in 2021. Let t=0 represent 2010.
If the population increased linearly, write an equation to describe the decline.
If the population increased exponentially, write an equation to describe the decline.
Transcribed Image Text:5. During a summer spraying program the mosquito population was reduced by 15% every 3 weeks. If the mosquito population was originally 180,000. How many mosquitoes remained after 10 weeks? 6. The number of bass in Lake Okeechobee has declined to one-third its previous level every 7 years since 1960, when it was estimated to be 8000. How many bass were in the lake in 1970? 7. The world's elephant population has been estimated to increase from 415,000 in 2010 to 497,000 in 2021. Let t=0 represent 2010. If the population increased linearly, write an equation to describe the decline. If the population increased exponentially, write an equation to describe the decline.
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